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Warning: This documentation is for a pre-release version of pgAdmin 4
Use the Maintenance dialog to VACUUM, ANALYZE, REINDEX or CLUSTER a database
or selected database objects.
While this utility is useful for ad-hoc maintenance purposes, you are encouraged
to perform automatic VACUUM jobs on a regular schedule.
Select a button next to Maintenance operation to specify the type of
Click VACUUM to scan the selected database or table to reclaim storage used
by dead tuples.
Move the FULL switch to the Yes position to compact tables by writing
a completely new version of the table file without dead space. The default
Move the FREEZE switch to the Yes position to freeze data in a table
when it will have no further updates. The default is No.
Move the ANALYZE switch to the Yes position to issue ANALYZE commands
whenever the content of a table has changed sufficiently. The default is
Click ANALYZE to update the stored statistics used by the query planner.
This enables the query optimizer to select the fastest query plan for optimal
Click REINDEX to rebuild any index in case it has degenerated due to the
insertion of unusual data patterns. This happens, for example, if you insert
rows with increasing index values, and delete low index values.
Click CLUSTER to instruct PostgreSQL to cluster the selected table.
To exclude status messages from the process output, move the Verbose Messages
switch to the No position; by default, status messages are included.
When you’ve completed the dialog, click OK to start the background process;
to exit the dialog without performing maintenance operations, click Cancel.
pgAdmin will inform you when the background process completes:
Use the Stop Process button to stop the Maintenance process.
Use the Click here for details link on the notification to open the Process
Watcher and review detailed information about the execution of the command that
performed the import or export: